The study examined behavioral enculturation to Asian culture and behavioral acculturation to the dominant European American culture and their possible relations to positive psychological functioning among Asian American adolescents. Positive psychological functioning was operationalized using measures of general self-efficacy, cognitive flexibility, collective self-esteem, and attitudes toward seeking help. Based on data from 112 Asian American high school students in Hawaii, the results did not support the hypothesis that both high behavioral enculturation and acculturation would be related to positive psychological functioning. However, post hoc examination of the results revealed that enculturation was positively associated with general self-efficacy, cognitive flexibility, and the collective self-esteem dimensions of membership, private, and importance-to-identity. Also, acculturation was negatively associated with the importance-to-identity dimension. Implications for research and practice with Asian American adolescents are discussed.